Segmentation fault when running NVIDIA System Profiler 3.8

Developer Tools Nsight Systems Profiling Embedded Targets
1

Hello,

I am trying to profile an application using NVIDIA Tegra System Profiler 3.8. The application runs on a Jetson TX2 module with R28.1 BSP. The application uses system(…) to call some shell functions such as rm. This makes the system(…) crash and the application misbehaves

I traced down the issue to the environment that the application is in when the Profiler attempts to launch it.

I am trying to collect Opengl Trace, CUDA Trace, GPU Context switch trace. The profiler’s instructions state to:

CUDA (Compute Unified Device Architecture)
Launch your application with the following environment variables:
CUDA_INJECTION32_PATH=/opt/nvidia/tegra_system_profiler/libToolsInjection32.so
CUDA_INJECTION64_PATH=/opt/nvidia/tegra_system_profiler/libToolsInjection64.so

OpenGL
Launch your application with the following environment variables:
For 32-bit:
LD_PRELOAD="/opt/nvidia/tegra_system_profiler/libToolsInjection32.so /opt/nvidia/tegra_system_profiler/libToolsInjectionProxy32.so"
INJECTION_FILE32="/opt/nvidia/tegra_system_profiler/libToolsInjection32.so"
For 64-bit:
LD_PRELOAD="/opt/nvidia/tegra_system_profiler/libToolsInjection64.so /opt/nvidia/tegra_system_profiler/libToolsInjectionProxy64.so"
INJECTION_FILE64="/opt/nvidia/tegra_system_profiler/libToolsInjection64.so"

I do just that and typing in rm results in

root@tegra-ubuntu:~# CUDA_INJECTION32_PATH=/opt/nvidia/tegra_system_profiler/libToolsInjection32.so
root@tegra-ubuntu:~# export CUDA_INJECTION32_PATH=/opt/nvidia/tegra_system_profiler/libToolsInjection32.so
root@tegra-ubuntu:~# export CUDA_INJECTION64_PATH=/opt/nvidia/tegra_system_profiler/libToolsInjection64.so
root@tegra-ubuntu:~# export LD_PRELOAD="/opt/nvidia/tegra_system_profiler/libToolsInjection64.so /opt/nvidia/tegra_system_profiler/libToolsInjectionProxy64.so"
root@tegra-ubuntu:~# export INJECTION_FILE64="/opt/nvidia/tegra_system_profiler/libToolsInjection64.so"
root@tegra-ubuntu:~# rm
rm: missing operand
Try 'rm --help' for more information.
Bus error (core dumped)

Please let me know how to resolve this issue. Thank you

2

Hi!
3.8 is really old, consider updating your tool (it’s called Nsight Systems now: https://developer.nvidia.com/nsight-systems#Jetson)

Regarding the crash: profiling short lived applications (like rm) is not really supported. Please try profiling on longer-running application: e.g. sleep 2 should work.